/*
 * Copyright (C) 2006-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */

package org.alfresco.jlan.server.auth;

import org.alfresco.jlan.server.config.InvalidConfigurationException;
import org.alfresco.jlan.server.config.SecurityConfigSection;
import org.alfresco.jlan.server.config.ServerConfiguration;
import org.springframework.extensions.config.ConfigElement;

/**
 * Default Users Interface
 *
 * <p>Use the user account list from the server configuration to provide the user details.
 *
 * @author gkspencer
 */
public class DefaultUsersInterface implements UsersInterface {

  // Security configuration containing the user list

  private SecurityConfigSection m_securityConfig;

  /**
   * Return the specified user account details
   *
   * @param userName String
   * @return UserAccount
   */
  public UserAccount getUserAccount(String userName) {

    //  Get the user account list from the configuration

    UserAccountList userList = m_securityConfig.getUserAccounts();
    if ( userList == null || userList.numberOfUsers() == 0)
      return null;

    //  Search for the required user account record

    return userList.findUser(userName);
  }

  /**
   * Initialize the users interface
   *
   * @param config ServerConfiguration
   * @param params ConfigElement
   * @exception InvalidConfigurationException
   */
  public void initializeUsers(ServerConfiguration config, ConfigElement params)
    throws InvalidConfigurationException {

    // Save the security configuration to access the user account list

    m_securityConfig = (SecurityConfigSection) config.getConfigSection( SecurityConfigSection.SectionName);
  }
}
